Consumable feeding device

Abstract

The utility model belongs to the technical field of household appliances, and discloses a consumable feeding device which comprises a liquid storage box, a liquid adding box and a peristaltic pump. The liquid adding box is connected with the liquid storage box, a liquid inlet is formed in the side, facing the liquid storage box, of the liquid adding box, a liquid outlet correspondingly communicated with the liquid inlet is formed in the other side of the liquid adding box, and a one-way valve is installed between the liquid inlet and the liquid outlet; the peristaltic pump is provided with a liquid pumping port and a liquid spitting port, the liquid pumping port is communicated with the liquid storage cavity, and the liquid spitting port is communicated with the liquid inlet; the liquid adding box is provided with a flushing channel, one end of the flushing channel is formed in the side, away from the liquid storage box, of the liquid adding box, and the other end of the flushing channel communicates with the upper portion of the one-way valve. By arranging the peristaltic pump, the one-way valve and the flushing channel, consumables mainly flow in the silicone tube and are flushed by spraying liquid at an outlet of the one-way valve, the device is suitable for throwing of various consumables with different characteristics, liquid discharging smoothness is guaranteed, the failure rate is reduced, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of home appliances, especially to a consumable feeding device. BACKGROUND

[0002] For washing machines, dishwashers and other home appliances, when performing cleaning work, consumables such as laundry detergent and washing agent will be fed into the internal cleaning cavity through the consumable feeding device to ensure the cleaning effect. Since users may feed different brands and different dates of consumables during use, these different consumable liquids are prone to block the internal pump group and the feeding nozzle due to differences in physical and chemical properties such as liquid viscosity, chemical corrosion, and dryness and solidification, which not only causes the feeding device to work with increasing noise over time, but also results in a low service life and a relatively high failure rate of the feeding device. SUMMARY

[0003] The utility model aims at providing a consumable feeding device which can avoid the dryness and blockage of the inlet and outlet of the peristaltic pump and the liquid outlet on the liquid adding box, ensure smooth liquid outlet, reduce working noise and prolong service life.

[0004] To achieve this purpose, the utility model adopts the following technical scheme: a consumable feeding device, comprising a liquid storage box, a liquid adding box and a peristaltic pump, the liquid storage box is provided with a liquid storage cavity; the liquid adding box is connected with the liquid storage box, one side of the liquid adding box facing the liquid storage box is provided with a liquid inlet, the other side is provided with a liquid outlet corresponding to the liquid inlet in communication, a one-way valve is installed between the liquid inlet and the liquid outlet; the peristaltic pump is provided with a liquid suction port and a liquid discharge port, the liquid suction port is communicated with the liquid storage cavity, and the liquid discharge port is communicated with the liquid inlet; wherein the liquid adding box is provided with a flushing channel, one end of the flushing channel is opened on the side of the liquid adding box away from the liquid storage box, and the other end is communicated above the one-way valve.

[0005] As a preferred, the liquid adding box comprises a liquid adding box body and a liquid adding box seat, the liquid adding box body and the liquid adding box seat are fixedly connected, the liquid inlet is opened in the liquid adding box seat, the liquid outlet is opened in the liquid adding box body, one side of the liquid adding box body facing the liquid adding box seat is provided with a first enclosing part, the first enclosing part is arranged around the liquid outlet and the flushing channel, one side of the liquid adding box seat facing the liquid adding box body is provided with a second enclosing part matched with the outer shape of the first enclosing part, the first enclosing part and the second enclosing part are spliced to form a flushing cavity, the flushing channel is communicated with the top end of the flushing cavity, and the one-way valve is contained in the flushing cavity.

[0006] As a preferred, one side of the liquid adding box body away from the liquid adding box seat is provided with a V-shaped guide block, the bottom end of the guide block is provided with a vertical baffle, a flow collecting groove is formed between the baffle and the inner wall of the guide block, and the flow collecting groove is communicated with the flushing channel.

[0007] As preferred, the liquid adding box is provided with a guide part on the side away from the liquid storage box, the guide part is in the shape of a trumpet mouth gradually expanding away from the liquid storage box, and the trumpet mouth-shaped guide part is in communication with the liquid outlet.

[0008] As preferred, the liquid adding box is provided with a first air hole penetrating through the liquid adding box along the wall thickness direction of the liquid adding box, the liquid storage box is provided with a pressure maintaining channel separated from the liquid storage cavity, one end of the pressure maintaining channel is in communication with the first air hole, the other end extends above the liquid storage cavity and is provided with a second air hole, and the pressure maintaining channel is in communication with the liquid storage cavity through the second air hole.

[0009] As preferred, the liquid adding box is provided with a plug on the side facing the liquid storage box, the plug is connected with the liquid storage box, the plug is provided with a through hole, the first air hole is in communication with the pressure maintaining channel through the through hole, the first air hole forms an air inlet on the side of the liquid adding box away from the liquid storage box, and the through hole is above the air inlet.

[0010] As preferred, the plug is connected with a first sealing ring, the liquid storage box is provided with a socket on the side facing the liquid adding box, and the first sealing ring is limited in the socket.

[0011] As preferred, the liquid adding box is provided with a liquid adding opening, the liquid adding opening is in communication with the liquid storage cavity and is above the flushing channel, and a detachable sealing cover is installed at the liquid adding opening.

[0012] As preferred, the edge of the side of the liquid adding box away from the liquid storage box is provided with a turned edge, the liquid adding box is connected with a cover, the bottom end of the cover is rotationally connected with the turned edge, the top end is provided with a clamping part, the turned edge is provided with a clamping groove clamping matched with the clamping part, the sealing cover is fixed to the cover, and the turned edge; and / or, the cover is provided with a hollow structure for the external spraying liquid to pass through.

[0013] As preferred, a liquid level sensor is installed on the bottom surface of the liquid storage box, and a detection end of the liquid level sensor extends into the liquid storage cavity.

[0014] The utility model discloses a beneficial effect: consumable feeding device works, peristaltic pump first draws the consumable from the liquid storage box through the liquid suction port, then the consumable is transmitted to the liquid discharge port through the internal silica gel pipe, and the consumable flows out from the liquid outlet through the liquid discharge port and the check valve, simultaneously, the external sprinkling device sprays the sprinkling liquid towards the liquid adding box, the sprinkling liquid mixes with the consumable and flows down, and part of the sprinkling liquid is washed from top to bottom to the check valve through the washing channel, and the purpose of consumable feeding is realized. Through setting up peristaltic pump, check valve and washing channel, the check valve structure of peristaltic pump at the liquid suction port is cancelled, and peristaltic pump transports the consumable by relying on the air pressure suction, makes the consumable flow in the silica gel pipe mainly and is washed by the sprinkling liquid at the check valve outlet, can effectively avoid that the consumable is dry and clogs the inlet and outlet (namely liquid suction port and liquid discharge port) of peristaltic pump and the liquid outlet on the liquid adding box, is applicable to the feeding of a plurality of different characteristics consumable, guarantees that the liquid flows smoothly, reduces the failure rate, prolongs the service life, and also guarantees that the noise of consumable feeding device does not increase after long-term work. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic diagram of consumable feeding device of the utility model embodiment;

[0016] Figure 2 It is the structure schematic diagram of peristaltic pump of the utility model embodiment;

[0017] Figure 3 It is the perspective view of liquid adding box of the utility model embodiment;

[0018] Figure 4 It is the explosion drawing of liquid adding box of the utility model embodiment;

[0019] Figure 5 It is Figure 1 The sectional view at A-A in Fig.

[0020] Figure 6 It is Figure 1 The sectional view at B-B in Fig.

[0021] Figure 7 It is the structure schematic diagram of liquid storage box of the utility model embodiment;

[0022] Figure 8 It is the exploded view of liquid storage box of the utility model embodiment;

[0023] Figure 9 It is Figure 8 The enlarged view at C in Fig.

[0024] In the drawing:

[0025] 100, liquid storage box; 110, liquid storage cavity; 111, liquid injection port; 112, expansion cavity; 120, liquid storage box body; 121, third enclosing part; 122, socket; 123, positioning groove; 130, liquid storage box cover; 131, fourth enclosing part; 140, pressure maintaining channel; 141, second air vent; 150, liquid level sensor; 160, threaded hole;

[0026] 200, liquid adding box; 210, liquid adding box body; 211, liquid outlet; 212, first enclosing part; 213, guide block; 2131, baffle; 2132, flow collecting groove; 214, guide part; 215, flange; 2151, clamping groove; 216, pressing part; 217, stud; 220, liquid adding box seat; 221, liquid inlet; 222, second enclosing part; 223, flushing cavity; 224, snap ring; 225, plug; 2251, through hole; 2252, first sealing ring; 230, one-way valve; 231, valve body; 232, valve cover; 240, flushing channel; 250, first air vent; 251, air inlet; 260, liquid adding port; 270, flip cover; 271, sealing cover; 272, second sealing ring; 273, clamping part; 280, third sealing ring;

[0027] 300, peristaltic pump; 310, shell; 320, mounting seat; 321, planet carrier; 322, roller; 330, silica gel tube; 340, joint; 341, liquid suction port; 342, liquid discharge port; 343, interface; 350, motor; 351, gear set. DETAILED DESCRIPTION

[0028] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0029] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0032] Reference Figures 1 to 9 As shown, a consumable dispensing device according to an embodiment of this application includes a liquid storage box 100, a liquid filling box 200, and a peristaltic pump 300. The shape of the liquid storage box 100 can be designed according to the specific applicable household appliance. Optionally, the shape of the liquid storage box 100 can be designed as a strip, a square, etc., which will not be elaborated here. The liquid storage box 100 is provided with a liquid storage chamber 110. Optionally, an expansion chamber 112 can be provided at the end of the liquid storage chamber 110 to increase the liquid storage capacity of the liquid storage chamber 110. In this embodiment, consumables refer to liquid laundry detergent, dish soap, and other substances, which is specifically stated here to avoid misunderstanding.

[0033] The filling box 200 is connected to the storage box 100 and located on one side of the storage box 100. The filling box 200 has an inlet 221 on the side facing the storage box 100 and an outlet 211 corresponding to and communicating with the inlet 221 on the other side. A one-way valve 230 is installed between the inlet 221 and the outlet 211. Specifically, the one-way valve 230 includes a valve body 231 with open sides and a valve cover 232 limited inside the valve body 231. The valve body 231 is open at one end near the inlet 221, and the valve cover 232 can slide towards or away from the opening to realize the one-way flow of consumables from the inlet 221 to the outlet 211.

[0034] The peristaltic pump 300 is provided with a liquid suction port 341 and a liquid discharge port 342. Specifically, the peristaltic pump 300 comprises a housing 310 and a mounting base 320 connected with each other, the housing 310 is connected with a motor 350, the mounting base 320 is provided with a planet carrier 321, the planet carrier 321 is rotationally connected with the mounting base 320 through a positioning pin, the motor 350 is in transmission connection with the planet carrier 321 through a gear set 351, the planet carrier 321 is provided with three rotatable rollers 322 at intervals in the circumferential direction, the mounting base 320 is provided with a U-shaped silica gel tube 330, the turning part of the U-shaped silica gel tube 330 is limited between the three rollers 322 and the inner wall of the mounting base 320 and is deformed by being extruded by the rollers 322, one end of the mounting base 320 is fixedly provided with a connector 340, the connector 340 is located between the liquid adding box 200 and the liquid storage box 100, the connector 340 is provided with two interfaces 343, the liquid suction port 341 and the liquid discharge port 342 are respectively protruded on the two sides of the connector 340, the liquid suction port 341 is located below the liquid discharge port 342, the two interfaces 343 are respectively in communication with the liquid suction port 341 and the liquid discharge port 342, the two ends of the U-shaped silica gel tube 330 are connected with the two interfaces 343 respectively to communicate the liquid suction port 341 and the liquid discharge port 342. The liquid suction port 341 is in sealing connection with the liquid storage box 100 through an O-shaped ring and is in communication with the liquid storage cavity 110, the liquid discharge port 342 is in sealing connection with the liquid inlet port 221 through an O-shaped ring and is in communication with the liquid inlet port 221. Since the peristaltic pump 300 is mature in technology and various in types, the specific structure and working principle of the peristaltic pump 300 will not be described here.

[0035] Specifically, the liquid adding box 200 is provided with a flushing channel 240, one end of the flushing channel 240 is opened on the side of the liquid adding box 200 away from the liquid storage box 100, and the other end is in communication above the one-way valve 230. In other words, the flushing channel 240 penetrates at least part of the wall thickness of the liquid adding box 200 from the side end face of the liquid adding box 200 away from the liquid storage box 100 and downwardly penetrates to above the one-way valve 230.

[0036] It can be understood that when the consumable feeding device is working, the motor 350 of the peristaltic pump 300 is started, the rollers 322 rotate along with the planet carrier 321 to generate a vacuum in the silica gel tube 330, under the atmospheric pressure, the silica gel tube 330 extracts the consumable from the liquid storage box 100 through the liquid suction port 341, and then transmits the consumable to the liquid discharge port 342, the consumable is pushed out of the valve cover 232 through the liquid discharge port 342 and flows out of the liquid outlet port 211, at the same time, the external spraying device sprays the spraying liquid towards the liquid adding box 200, the spraying liquid mixes with the consumable and flows down from the bottom end of the liquid adding box 200 under the action of gravity, and part of the spraying liquid flushes the one-way valve 230 from top to bottom through the flushing channel 240, achieving the purpose of feeding the consumable.

[0037] By incorporating a peristaltic pump 300, a one-way valve 230, and a flushing channel 240, the peristaltic pump 300 relies on air pressure to transport consumables. The consumables mainly flow in the silicone tube 330 and are flushed by spray liquid at the outlet of the one-way valve 230. This effectively prevents consumables from drying out and clogging the inlet and outlet of the peristaltic pump 300 and the outlet 211. Even with different consumable characteristics, they will not dry out and clog the suction port 341, discharge port 342, the one-way valve 230 at the discharge port 342, or the outlet 211 on the liquid filling box 200. This method is suitable for dispensing consumables with various characteristics, ensuring smooth liquid dispensing, reducing the failure rate, and extending the service life. Furthermore, because there are no dry consumables causing blockage, the consumables experience less friction, resulting in high flow efficiency and ensuring that the noise level of the consumable dispensing device does not increase after long-term operation.

[0038] Furthermore, a liquid level sensor 150 is mounted on the bottom surface of the liquid storage box 100, with the detection end of the liquid level sensor 150 extending into the liquid storage cavity 110. Optionally, the bottom surface of the liquid storage box 100 is provided with a positioning groove 123 that matches the shape of the liquid level sensor 150, and the liquid level sensor 150 is confined in the positioning groove 123 and bolted to the liquid storage box 100. An O-ring for sealing is also provided between the liquid level sensor 150 and the liquid storage box 100.

[0039] By setting up a liquid level sensor 150, the liquid level sensor 150 can detect the liquid level of consumables in the liquid storage box 100 and transmit the signal to the electrical control assembly of the appliance, so that the motor 350 can be shut down in time when the liquid level is low and the consumable storage is insufficient, thus avoiding the peristaltic pump 300 being idle and affecting the service life of the consumable dispensing device.

[0040] Reference Figure 1 , Figure 3 and Figure 5 As shown, it can be understood that the liquid filling box 200 is provided with a liquid filling port 260, which extends through the liquid filling box 200 along the wall thickness direction. The side wall of the liquid storage box 100 is provided with a liquid injection port 111. The liquid filling port 260 is sealed to the liquid injection port 111 by an O-ring. The liquid filling port 260 is connected to the liquid storage chamber 110 through the liquid injection port 111 and is located above the flushing channel 240. A removable sealing cap 271 is installed at the liquid filling port 260.

[0041] The user can add consumables into the storage chamber 110 through the filling port 260 by removing the sealing cap 271. The user can also close the storage chamber 110 by installing the sealing cap 271 to seal the filling port 260. The filling port 260 is positioned in the filling box 200 and above the flushing channel 240, making efficient use of the space above the flushing channel 240, reducing the lateral dimensions of the filling box 200, effectively improving the integration of the filling box 200, and facilitating the user's addition of consumables.

[0042] Reference Figure 3 and Figure 4As shown, it can be understood that the edge of the liquid adding box 200 away from the liquid storage box 100 is provided with a turning edge 215, the turning edge 215 is arranged along the circumference of the liquid storage box 100 and surrounds the top edge and the two side edges of the liquid storage box 100, the liquid adding box 200 is connected with a cover 270, the bottom end of the cover 270 is rotationally connected with the turning edge 215, the top end is provided with an elastic arm, the elastic arm is provided with a clamping portion 273, the turning edge 215 is provided with a clamping groove 2151 matched with the clamping portion 273, and a sealing cover 271 is fixed to the cover 270. The turning edge 215; and / or, the cover 270 is provided with a hollow structure for the external spraying liquid to pass through. Specifically, the upper turning edge 215 is provided with a hollow structure for the external spraying liquid to pass through, or the cover 270 is provided with a hollow structure for the external spraying liquid to pass through, or both the upper turning edge 215 and the cover 270 are provided with a hollow structure for the external spraying liquid to pass through, wherein the hollow structure can be a plurality of strip-shaped holes, a plurality of circular holes or a grid structure, which will not be described here.

[0043] Optionally, the sealing cover 271 can be connected to the side wall of the cover 270, or can be integrally formed with the sealing cover 271, the sealing cover 271 is provided with a second sealing ring 272, the cross section of the second sealing ring 272 is C-shaped, the side away from the liquid storage box 100 of the liquid adding box 200 is provided with an annular pressing portion 216, and the pressing portion 216 is arranged around the liquid adding opening 260. When the clamping portion 273 is clamped in the clamping groove 2151, the second sealing ring 272 and the pressing portion 216 abut and deform, so as to close the liquid adding opening 260, and at this time, a gap is formed between the bottom end of the cover 270 and the liquid adding box 200 for the mixed liquid of the consumable and the spraying liquid to pass through.

[0044] By arranging the cover 270, on the one hand, the sealing cover 271 is integrated in the cover 270, the user can install or dismount the sealing cover 271 by rotating the cover 270, so as to effectively improve the convenience of installing or dismounting the sealing cover 271; on the other hand, the cover 270, the turning edge 215 and the side wall of the side away from the liquid storage box 100 of the liquid adding box 200 cooperate to limit the spraying liquid, so as to avoid the spraying liquid from splashing and overflowing, and improve the cleanliness of the consumable feeding device.

[0045] Referring to Figures 3 to 5As shown, it can be understood that the liquid adding box 200 comprises a liquid adding box body 210 and a liquid adding box seat 220, and the liquid adding box body 210 and the liquid adding box seat 220 are fixedly connected. Optionally, the liquid adding box body 210 and the liquid adding box seat 220 are welded to ensure the structural stability and sealing property of the liquid adding box 200. The liquid inlet 221 is arranged on the liquid adding box seat 220 and penetrates through the liquid adding box seat 220, the liquid outlet 211 is arranged on the liquid adding box body 210 and penetrates through the liquid adding box body 210, the side of the liquid adding box body 210 facing the liquid adding box seat 220 is provided with a first surrounding part 212, the first surrounding part 212 is arranged around the liquid outlet 211 and the flushing channel 240, the side of the liquid adding box seat 220 facing the liquid adding box body 210 is provided with a second surrounding part 222 matched with the outer shape of the first surrounding part 212, the first surrounding part 212 and the second surrounding part 222 are spliced to form a flushing cavity 223, the flushing channel 240 is in communication with the top end of the flushing cavity 223, and the one-way valve 230 is accommodated in the flushing cavity 223.

[0046] By arranging the first surrounding part 212 and the second surrounding part 222, after the liquid adding box body 210 and the liquid adding box seat 220 are fixedly connected, the flushing cavity 223 formed by the first surrounding part 212 and the second surrounding part 222 can limit the spray liquid passing through the flushing channel 240, so as to avoid the spray liquid overflowing into the gap between the liquid adding box body 210 and the liquid adding box seat 220 to cause pollution, and effectively improve the structural rationality of the liquid adding box 200.

[0047] Further, the side of the liquid adding box seat 220 facing the liquid adding box body 210 is provided with a snap ring 224, the snap ring 224 is located in the second surrounding part 222, and the one-way valve 230 is limited in the snap ring 224 by the O-ring sealing, so as to effectively improve the installation stability of the one-way valve 230.

[0048] It should be noted that the outer peripheral wall of the liquid adding box body 210 is further sleeved with a third sealing ring 280, the third sealing ring 280 is used to seal the gap between the liquid adding box 200 and the mounting sheet metal after the consumable feeding device is installed to the household appliance, so as to avoid the spray liquid polluting the surrounding of the liquid storage.

[0049] Referring to Figure 3 and Figure 5 As shown, it can be understood that the side of the liquid adding box body 210 away from the liquid adding box seat 220 is provided with a V-shaped guide block 213, the guide block 213 protrudes from the surface of the liquid adding box body 210, the bottom end of the guide block 213 is provided with a vertical baffle 2131, and the baffle 2131 and the inner wall of the guide block 213 form a flow collecting groove 2132, and the flow collecting groove 2132 is in communication with the flushing channel 240.

[0050] By setting the guide block 213 and the flow collection groove 2132, the V-shaped guide block 213 can collect the spray liquid sprayed from the top end of the liquid adding box 200 or obliquely above the flushing channel 240, and guide the collected spray liquid into the flushing channel 240, thereby increasing the flow of the spray liquid in the flushing channel 240 and enhancing the flushing effect of the spray liquid on the one-way valve 230.

[0051] Continuing to refer to Figure 3 and Figure 5 It can be understood that the side of the liquid adding box body 210 away from the liquid adding box seat 220 is provided with a guide portion 214, the guide portion 214 is in the shape of a horn mouth gradually expanding away from the liquid storage box 100, and the horn mouth-shaped guide portion 214 is in communication with the liquid outlet 211.

[0052] By setting the horn mouth-shaped guide portion 214, after the consumables and the spray liquid are mixed at the outlet of the one-way valve 230, the guide portion 214 can guide the mixed liquid to be sprayed in a diffused manner, thereby expanding the spraying range and angle of the mixed liquid and enhancing the dispensing effect of the consumable dispensing device.

[0053] Referring to Figure 6 and Figure 7 It can be understood that the liquid adding box 200 is provided with a first air hole 250, the first air hole 250 penetrates through the liquid adding box 200 in the thickness direction of the wall of the liquid adding box 200, the liquid storage box 100 is provided with a pressure maintaining channel 140 separated from the liquid storage cavity 110, one end of the pressure maintaining channel 140 is in communication with the first air hole 250, the other end extends above the liquid storage cavity 110 and is provided with a second air hole 141, and the pressure maintaining channel 140 is in communication with the liquid storage cavity 110 through the second air hole 141.

[0054] By setting the first air hole 250, the pressure maintaining channel 140 and the second air hole 141, the first air hole 250 is in communication with the external air, and the second air hole 141 is in communication with the external air through the pressure maintaining channel 140 and the first air hole 250, thereby ensuring that the air pressure inside the liquid storage cavity 110 of the liquid storage box 100 is consistent with the external air pressure. When the user adds consumables into the liquid storage box 100, the air in the liquid storage cavity 110 is discharged out of the liquid storage cavity 110 through the pressure maintaining channel 140 and the first air hole 250, and when the consumables in the liquid storage cavity 110 are consumed, the liquid storage cavity 110 replenishes the air pressure through the pressure maintaining channel 140 and the second air hole 141, so that the internal consumables can be pumped out by the peristaltic pump 300 at any time, avoiding insufficient pressure in the liquid storage cavity 110 and difficulty in pumping by the peristaltic pump 300, and affecting the working efficiency of the consumable dispensing device. In addition, the extension of the pressure maintaining channel 140 above the liquid storage cavity 110 can avoid the reverse infiltration of the consumables in the liquid storage cavity 110 into the pressure maintaining channel 140 or even out of the liquid storage cavity 110 through the second air hole 141, thereby ensuring the liquid storage effect of the liquid storage cavity 110.

[0055] Referring to Figure 8 andFigure 9 As shown, specifically, the liquid storage box 100 includes a liquid storage box body 120 and a liquid storage box cover 130, the liquid storage box body 120 and the liquid storage box cover 130 are welded and fixed, and the liquid injection port 111 is arranged on the liquid storage box body 120. The opposite sides of the liquid storage box body 120 and the liquid storage box cover 130 are respectively provided with a third surrounding part 121 and a fourth surrounding part 131, the third surrounding part 121 and the fourth surrounding part 131 are spliced to form a pressure maintaining channel 140 which is isolated from the liquid storage cavity 110, and a second air vent hole 141 is arranged on the third surrounding part 121.

[0056] Further, the liquid storage box body 120 and the liquid storage box cover 130 cooperatively form a plurality of threaded holes 160 penetrating through the liquid storage box 100, the liquid adding box 200 and the peristaltic pump 300 are both provided with a threaded column 217 corresponding to the threaded hole 160, and the liquid storage box 100 is fixedly connected with the liquid adding box 200 and the peristaltic pump 300 through the threaded holes 160, so that the installation stability of the liquid adding box 200 and the peristaltic pump 300 is effectively improved without affecting the sealing performance of the liquid storage cavity 110, and the structural compactness of the consumable feeding device is improved.

[0057] Referring to Figure 4 and Figure 6 As shown, it can be understood that the side of the liquid adding box 200 facing the liquid storage box 100 (i.e. the side of the liquid adding box seat 220 away from the liquid adding box body 210) is provided with a plug 225, the plug 225 protrudes from the surface of the liquid adding box 200, the plug 225 is provided with a through hole 2251, the plug 225 is connected with the liquid storage box 100, the first air vent hole 250 is in communication with the pressure maintaining channel 140 through the through hole 2251, the first air vent hole 250 forms an air inlet 251 on the side of the liquid adding box 200 away from the liquid storage box 100, and the through hole 2251 is located above the air inlet 251.

[0058] The through hole 2251 is arranged above the air inlet 251, that is, there is a height difference between the air inlet 251 of the liquid adding box 200 and the pupil of the liquid adding box 200, which can prevent backflow without affecting the gas flow and the balance of the air pressure inside and outside the liquid storage cavity 110, avoid the spray liquid sprayed towards the liquid adding box 200 from entering the pressure maintaining channel 140 through the first air vent hole 250 to cause pollution, and effectively improve the structural rationality of the first air vent hole 250.

[0059] Referring to Figure 6 and Figure 7 As shown, the plug 225 is connected with a first sealing ring 2252, the side of the liquid storage box 100 facing the liquid adding box 200 is provided with a socket 122, and the first sealing ring 2252 is limited in the socket 122.

[0060] By setting the first sealing ring 2252, the first sealing ring 2252 is pressed between the outer peripheral wall of the plug 225 and the inner peripheral wall of the socket 122, the air tightness between the plug 225 and the liquid storage box 100 can be effectively improved, the sealing of the first gas permeable hole 250 and the pressure maintaining channel 140 is guaranteed, and the gas leakage affecting the air pressure balance between the inside and outside of the liquid storage cavity 110 is avoided.

[0061] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, all the embodiments need not and cannot be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A consumable dispensing device, characterized in that, The utility model relates to a liquid adding device, including: A liquid storage box (100) is equipped with a liquid storage cavity (110); Liquid adding box (200) is connected with the liquid storage box (100), and one side of liquid adding box (200) towards the liquid storage box (100) is equipped with liquid inlet (221), and the other side is equipped with the liquid outlet (211) of corresponding intercommunication with liquid inlet (221), and one-way valve (230) is installed between liquid inlet (221) and liquid outlet (211); Peristaltic pump (300) is equipped with liquid suction port (341) and liquid outlet (342), and liquid suction port (341) is communicated with liquid storage cavity (110), and liquid outlet (342) is communicated with liquid inlet (221); Wherein, the liquid adding box (200) is equipped with the washing channel (240), and one end of the washing channel (240) is opened on the side of the liquid adding box (200) away from the liquid storage box (100), and the other end is communicated above the one-way valve (230).

2. The consumable delivery device of claim 1, wherein, The liquid adding box (200) includes liquid adding box body (210) and liquid adding box seat (220), and the liquid adding box body (210) and the liquid adding box seat (220) are fixedly connected, the liquid inlet (221) is opened in the liquid adding box seat (220), the liquid outlet (211) is opened in the liquid adding box body (210), the liquid adding box body (210) is equipped with the first surrounding part (212) on the side towards the liquid adding box seat (220), the first surrounding part (212) is arranged around the liquid outlet (211) and the washing channel (240), the liquid adding box seat (220) is equipped with the second surrounding part (222) matched with the outer shape of the first surrounding part (212) on the side towards the liquid adding box body (210), the first surrounding part (212) and the second surrounding part (222) are spliced to form the washing cavity (223), the washing channel (240) is communicated with the top end of the washing cavity (223), and the one-way valve (230) is accommodated in the washing cavity (223).

3. The consumable delivery device of claim 2, wherein, The liquid adding box body (210) is equipped with the guide block (213) of V type on the side away from the liquid adding box seat (220), the bottom end of the guide block (213) is equipped with the vertical baffle (2131), the baffle (2131) and the inner wall of the guide block (213) form the flow collection groove (2132) between them, and the flow collection groove (2132) is communicated with the washing channel (240).

4. The consumable delivery device of claim 2, wherein, The liquid adding box body (210) is equipped with the guide part (214) on the side away from the liquid adding box seat (220), the guide part (214) is trumpet mouth shape gradually expanding in the direction away from the liquid storage box (100), and the trumpet mouth shape guide part (214) is communicated with the liquid outlet (211) correspondingly.

5. A consumable delivery device according to any of claims 1 to 4, wherein, The liquid adding box (200) is provided with a first air vent (250) penetrating through the liquid adding box (200) along the wall thickness direction of the liquid adding box (200), the liquid storage box (100) is provided with a pressure maintaining channel (140) separated from the liquid storage cavity (110), one end of the pressure maintaining channel (140) is communicated with the first air vent (250), the other end extends above the liquid storage cavity (110) and is provided with a second air vent (141), and the pressure maintaining channel (140) is communicated with the liquid storage cavity (110) through the second air vent (141).

6. The consumable delivery device of claim 5, wherein, The liquid adding box (200) is provided with a plug (225) on the side facing the liquid storage box (100), the plug (225) is connected with the liquid storage box (100), the plug (225) is provided with a through hole (2251), the first air vent (250) is communicated with the pressure maintaining channel (140) through the through hole (2251), and the first air vent (250) forms an air inlet (251) on the side of the liquid adding box (200) away from the liquid storage box (100), and the through hole (2251) is located above the air inlet (251).

7. A consumable delivery device according to claim 6, wherein, The plug (225) is connected with a first sealing ring (2252), the liquid storage box (100) is provided with a socket (122) on the side facing the liquid adding box (200), and the first sealing ring (2252) is limited in the socket (122).

8. A consumable delivery device according to any of claims 1 to 4, wherein, The liquid adding box (200) is provided with a liquid adding opening (260), the liquid adding opening (260) is communicated with the liquid storage cavity (110) and is located above the flushing channel (240), and a detachable sealing cover (271) is installed at the liquid adding opening (260).

9. A consumable delivery device according to claim 8, wherein, The edge of the liquid adding box (200) away from the liquid storage box (100) is provided with a turned edge (215), the liquid adding box (200) is connected with a cover (270), the bottom end of the cover (270) is rotationally connected with the turned edge (215), the top end is provided with a clamping part (273), the turned edge (215) is provided with a clamping groove (2151) clamped and matched with the clamping part (273), the sealing cover (271) is fixed to the cover (270), the turned edge (215); and / or, the cover (270) is provided with a hollow structure for the external spraying liquid to pass through.

10. A consumable delivery device according to any of claims 1 to 4, wherein, The bottom surface of the liquid storage box (100) is installed with a liquid level sensor (150), and the detection end of the liquid level sensor (150) extends into the liquid storage cavity (110).

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